Automatically-threading shuttle for looms



Nov. 15, 1927. 1,649,618

' J. F. SHAW AUTOMATICALLY THREADING SHUTTLE FOR LOOMS Filed April 2 192.7

ATTORNEY 7 Patented Nov. 15, 1921.

UNIT-ED STATES'IZPKATE'NT OFFICE.

' JOHN B. SHAW,

.POBATION, O1 HOP EDALE,

OF SOMEBSWOBTH} NEW HAMPSHIRE, ASSIGNOR TO DB -AIEB COB- IMIASSACHUSETTS,

A CORPORATION OF MAINE.

eu'rom'rrcemx-rnnnnnme snu'r'rnn non Looms.

Application filed April 22,1927, Serial No. 185,697.

' This invention relates to automatically threading shuttles for looms. wherein the filling carrier or bobbin in the shuttle is chan ed from time to time to maintain the supp y of filling during'weaving. p

in the priorpatent to Edward S. Stimpson, No. 1,483,492, dated February 12,1924, there is shown and described an automatically threading shuttle having a longitudinally extending thread passage and ascroll or thread casting device in the-thread pas sage for casting the thread on theoccurrence of a 100 or overthrow, and in the later patent to dward S. Stimpson,No. 1,538,224,- dated May 19,1925, the

shown and described as made of cast iron with surfaces finishedto not obstruct movement of the thread. The present invention in one of. its aspects-is a further development ofthe shuttle shown and described in i and is more particuthe Sti-mpson patents,

for removing flufi,

larly directed to means lint or slubs from the filling as it is with- .drawn from the shuttle during weaving. Such 'flufi, lint or, ,slubs if woven into'the cloth :are liable to resent objectionable surface finish and ren er the cloth imperfect in certain respects, and an important feature i oft-he present invention therefore consists in a slub catcher having a threading eye 0 smaller dimensions than the interior open portion of the scroll and located between'the scroll-and the bobbin chamber to intercept such flufi, lint orslubs and prevent them as fiogi being drawn'with the above mentioned, the swirling action of thread as it is withdrawn from the shuttle 40 on the first pick followinglreplen'ishment, is utilized in connection wit the convolutions of the scrollto efiect preliminary threading of the shuttle, and in accordance with the present invention, the fiufi catcher is pro- .vided with a finger which extendslaterally and downwardly relative to the longitud1-' swirling action of the threading block is The invention and f block and fluff catcher,

filling into the As pointed out in the Stimpson patepltscast iron as described in the Stimpson Patent, No. 1,538,224, above mentioned, it is desirable-that the fluff catcherbe secured to the cast 1r0n block, and as one meansto this end the cast iron block has a recess formed in the art thereof adjacent the bobbin chamber nto which the fluff catching block is seated and secured. It is likewise desirable in the use of a flufi catcher such as contemplated by the present invention', that the thread may not meet with any obstruction by the flufi catcher as it swirls from the filling carrier or bobbin in.- the preliminary threading, and the present invention, therefore so combines the fluff catcher with the threading block and scroll as to obviate any obstructions in the path of the-swirling thread.

novel, features thereof of partswill best be following description drawings of one good and new combination made clear from the and the accompanying formthereof. I

In the drawings:

Fig. 1 is a perspective view of an automatically threading shuttle provided with the present invention, certain portions of the shuttle being broken away;

Fig. 2 is an end view of the threading looking frontwardly from thebobbin chamber; and

Fig. 3 is a side elevation of the threading. block and fluff catcher removed from the shuttle.

The-shuttle 1 may be formed of wood, as usual,,and is provided with the bobbin chamber 2 in which is mounted the fillin carrier or bobbin 3, as usual. The forwar end of the shuttle 1 has a recess 4 in which is mounted the threading block 5 which, except as hereinafterexplained, may be substantially the same as either of the, threading blocks in the Stimpson patents hereinbefore mentioned. As usual in shuttles of the replenishing type, the shuttle herein shown is also rovided with a side delivery eye 6 from whic the thread is'drawn during weaving. The threading block 5 may be secured in the recess 4 by the usual transverse bolt which asses through an opening 7 formed in the t reading block, and extending longitudinally of the threading block is the thread passage 8.

Extendin frontwardly in the thread paetially sage is the scroll or thread casting device 9 which maybe appropriately secured to the block in any approved manner, or substanas shown in the Stimpson patents heretofore called to attention.

Between the scroll 9 and the bobbin chamher is the flufi catcher 10 having an eye 11 which is smaller than the assage leading throu h the scroll, the res t. being that as the filling or thread a is withdrawn from the filling carrier or bobbin 3, any flufl' or slubs, such as b that happen to cling to the filling will be removed therefrom or be obstructed by the small eye of the fluff catcher and will not therefore be withdrawn with the filling into the shed.

In the present instance of the invention, the threading. block 5 is provided with a re; cess 12 formed in' the threading block at a point adjacent the bobbin flufi catcher 10 as shown comprises a base portion 13 which may be fitted to the recess 12 formed in the block and be secured thereto by any appropriate means, either by brazin or soldering the flufi catcher to the threading block. Extending from the upper .d

portion 14 of the fluflt' catcher is the laterally and downwardly extending finger 15 which,

in connection with the base portion of the block, provides the thread eye 11, and the upper surface of the laterall and downwardly extending finger is su stantially of the same curvature as the adjacent portion of the scroll 9, with the result that such finger ofiers no obstruction to the swirling action of the thread and does not, therefore, in an way interfere with the preliminar threading of the shuttle on its first pick f0 lowing replenishment.

The flufl' catcher 10 frontward of the downwardly and-laterally extending finger 15 is provided with a part 16 which as shown is brazed at 17 to the adjacent ortion of the scroll 9, and such part 16 con orms substantially to the outer contour or convolution of the scroll adjacent thereto. The result of this particular construction,.which may be varied within the scope of the present invention, provides a smooth unobstructed surface for the swirling of the thread.

In order that the swirling thread may enter the thread eye of the flufi catcher during preliminary threading of the shuttle, an openin or passageway 18 is rovided between e end of the downwar y and laterally extending finger 15 and the base portion of the fluff catcher, and since the curvature of the finger conforms substantially to the curve of the adjacent portion of the scroll the swirling'thr'ead will pass downwardly at the side of the finger 15and enter the assageway- 18 into the small thread eye of t e flufi catcher. 7

Between the downwardly and laterally extending finger 15 of the flufi catcher and the chamber and the catcher having a thread neeaere part 16, the fluff catcher has a thread guide 19 which is adapted to engage-the thread should the shuttle not be preliminarily threaded on the first pick following replenishment, so that on the return of the shuttle to the replenishing box thethread will draw over the guide 19.

The rear edge portion of the part 16 of to be thrown from the shuttle on theoccur rence of a loop or overthrow.

From the construction described it will be apparent that the present invention pro- .Vides in connection with the automatically threading shuttle of the Stimpson patents, a flufi catcheryhaving an eye smaller than the interior convolutlonsof the scroll, to thereby remove fluif, lint and slubs before the thread passes intothe scroll during the withdrawal of the thread from the shuttle uring weaving, and the laterally and downwardly extending finger 15 which conforms substantially to the exteriorcontour or convolutions of the adjacent portions of the scroll offers no thread during shuttle on the ment.

As hereinbefore mentioned also, it will be apparent that the. flufi' catcher 10 may be secured in position between the scroll and bobbin chamber by means suitable for this purpose, but, in order to obviate the formation of any obstruction, such as-cracks or projections between the scroll and fluff catcher, it is preferred that the fluff catcher be brazed to the scroll as hereinbefore noted and as indicated at 17, Fig. 1.

What is claimed is:

1. A filling replenishing shuttle having a bobbin chamber and side delivery eye, a threading block between the bobbin chamber and side delivery eye having a longitudinally reliminary threading of the rst pick following replenishobstruction to the swirling extending thread passage, a scroll in the block between the scroll and bobbin chamber and having a laterally and downwardly proecting finger conforming substantially with the curvature of the scroll adjacent thereto for cooperation with the scroll inpdirectin the swirling thread into the flufi catcher and scroll during shuttle threading. Y

2. g'replenishing shuttle having a bobbin chamber and side delivery eye, a threading block having a scroll extendln frontwardly in the thread passage, a flu eye smaller than the convolutions of the opening formed by the scroll and located between the scroll and shuttle, and means for securing the fiufi bobbin chamber said flufi' catcher including catcher to the threading block. A a base portion and a laterally and down- 5. A filling replenishing shuttle having a wardly extending finger having an exterior bobbin chamber and side delivery eye, a

surface conforming substantially with the threading block having a longitudinal thread curvature of the scroll adjacent thereto. passage and provided with a recess adjacent 3. A filling replenlshing shuttle having a the bobbin chamber, a scroll extending forbobbin chamber and side delivery eye, a wardly in the thread passage, a fluff catcher threading block havingalongitudinal thread comprislng a block seated in the recess of 40 passage, a scroll extending frontwardly 1n the threading block and vformed with a the thread passage, a flufi catcher between laterally and downwardlyextending finger the scroll and bobbin chamber having a forming a thread eye smaller than the Openfinger which extends laterally and downing of the scroll and having its exterior surwardly of the thread passage in substantial face conforming with the adjacent convoluconformation with the convolution of the tion of the scroll.

scroll and forming a thread eye smaller than. 6.A filling replenishing shuttle having a the opening through the scroll to catch fluff bobbin chamber and side delivery eye, a on the thread as it is withdrawn from the cast iron threading block having a longitushuttle. dinally extending thread passage, a scroll in 0 4. A filling replenishing shuttle having a the thread passage, and a fluif catcher bebobbin chamber and side delivery eye, a tween the scroll and bobbin chamber formed threading block having a longitudinal thread with a. thread eye smaller than the opening passage, a scroll extending frontwardly in in the scroll and provided with a side enthe thread passage, a fluff catcher between trance to the eye, and a finger extending the scroll and bobbin chamber having a laterally and downwardly from the fluff finger which extends laterally and downcatcher and having its exterior surface in wardly of the thread passage in substantial substantial conformity with the adjacent conformation with the convolution of the portion of the scroll.

scroll and forming a thread eye smaller than In testimony whereof, I have signed my the opening through the scroll to catch fluff name to this specification.

on the thread as it is withdrawn from the JOHN F. SHAW. 

